I clecoed in the panel, bolted in the WD-8914 windscreen support, then clecoed up the baggage door support strips. I drilled, deburred and dimpled the F-873G-1 Hinge support, clecoed it in with the F-873H spacer (once I found it) and then clecoed the forwrd top skin on. I final drilled all of the holes, I seperated, edge deburred, measured, drilled and deburred the F-8104-R/L stainless forward skin support ribs. then unclecoed the whole mess to deburr the holes...